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Full-Text Articles in Forest Sciences
Impacts Of Climate And Wildfire On Western Larch Regeneration, Spencer T. Vieira
Impacts Of Climate And Wildfire On Western Larch Regeneration, Spencer T. Vieira
Graduate Student Theses, Dissertations, & Professional Papers
Fire plays a critical role in forests of the western United States (US), but as wildfire and climate deviate from historical patterns, increasing fire activity may significantly alter forest ecosystems. To understand the impacts of changing climate and wildfire activity on conifer forests, we studied the impact of wildfire and annual post-fire climate on western larch (Larix occidentalis) regeneration. We destructively sampled 1651 seedlings from 57 sites within 32 fires that burned at moderate or high severity from 2000-2015 in the northwestern US. Using dendrochronological methods, we estimated germination years of seedlings to calculate annual recruitment rates. We …
Demographics And Growth History Of Whitebark Pine On Undisturbed Sites Across The Northern Us Rocky Mountains, Sarah Flanary
Demographics And Growth History Of Whitebark Pine On Undisturbed Sites Across The Northern Us Rocky Mountains, Sarah Flanary
Graduate Student Theses, Dissertations, & Professional Papers
Along with fluctuating precipitation and temperatures in the form of climate change, whitebark pine (Pinus albicaulis) has seen a territory wide increase in mortality leading to a decline in population. While the most direct influences on whitebark pine health and mortality are mountain pine beetle (Dendroctonus ponderosae) outbreaks, fire exclusion policies, and the spread of white pine blister rust (Cronartium ribicola), climate change can impact the intervals and severity of such beetle, rust, and fire disturbances, and may affect the growth and health of whitebark pine directly. The objectives of this study were to identify whitebark pine stands within the …